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3 years ago

Find the indicated sum of the geometric series. ∑6k=1−3(2)k−1

1 answer:

6 0

$\displaystyle\sum_{k=1}^63\times2^{k-1}=3\frac{1-2^6}{1-2}=189$

Or, if that hyphen between the lower index and 3 is actually a negative sign, then the sum is -189.

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What is the power of 90000÷5768

Georgia [21]

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3 0

3 years ago

What is the slope of y=-1/3x+4the slope of y=-1/3x+4

charle [14.2K]

Answer:

-1/3

Step-by-step explanation:

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3 years ago

Figure ABCD is a square. Prove BD ≅ AC. Statements Reasons 1. ABCD is a square 1. given 2. ∠DAB, ∠ABC, ∠BCD, and ∠CDA are right

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3 years ago

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Let's say Jose deposited $2,700 into a CD account with an Annual Percentage Rate

sergey [27]

Answer:

$3283.2

Step-by-step explanation:

Given data

Principal= $2700

Rate= 4%

Time= 5 years

Required

the final Amount A

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A=P(1+r)^t

Substitute

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A=2700(1.04)^5

A=2700*1.216

A=$3283.2

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5 0

3 years ago

Find the solution of the square root of the quantity of x plus 2 plus 4 equals 8, and determine if it is an extraneous solution

Iteru [2.4K]

Consider the equation:

$\sqrt{x+2}+4 = 8$

Subtracting '4' from both the sides of the equation, we get as

$\sqrt{x+2}+4-4= 8-4$

$\sqrt{x+2}= 4$

Squaring on both the sides of the equation, we get

$(\sqrt{x+2})^2 = (4)^2$

$x+2 = 16$

Subtracting '2' from both the sides of the equation, we get

$x+2-2=16-2$

x=14

Since, An extraneous solution is a solution that arises from the solving process that is not really a solution at all. But, in this equation x=14 is the solution of the given equation.

Hence, it is not an extraneous solution.

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3 years ago

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